2011 Ford Explorer Limited Edition. The flashers won't turn on, but everything else works.
Question edited for clarity, 'explore' to Explorer.Question moved to category.Jeff our Pro Technician and electronics wizard provides the answer.Jeff Armer Jun 12, 2022Sorry Andrew , doesn't have a flasher relay . The smart junction box supplies a powerPrinciples of OperationThe smart junction box (SJB) monitors the multifunction switch position by sending multiple voltage reference signals to the multifunction switch. When the multifunction switch is in the LH or RH TURN positions, or the hazard lamp switch is engaged, that input signal is routed to ground.When the SJB receives an input from the multifunction switch indicating a request for a turn signal or hazard lamps, the SJB then supplies voltage to the appropriate turn lamps.The SJB utilizes a protective circuit strategy for many of its outputs (for example, the headlamp output circuit). Output loads (current level) are monitored for excessive current (typically short circuits) and are shut down (turns off the voltage or ground provided by the module) when a fault is detected. A continuous DTC is stored at that time for the fault. The circuit will then reset after an ignition cycle or customer demand of the function (switching the component on, 30-minute battery saver being energized). When an excessive circuit load occurs several times, the module shuts down the output until a repair procedure is carried out. At the same time, the continuous DTC that was stored on the first failure will not clear by a command to clear the continuous DTCs. The module will not allow this code to be cleared or the circuit restored to normal until a successful on-demand self-test proves that the fault has been repaired. After the on-demand self-test has successfully completed (no on-demand DTCs present), the continuous DTC will have been cleared and the circuit function will return.Jeff Armer Jun 12, 2022Hooking up a scan tool an checking for DTC'SSmart Junction Box (SJB) Diagnostic Trouble Code (DTC) Chart DTC Description ActionB1499 Lamp Turn Signal Left Circuit Failure Go To Pinpoint Test M .B1502 Lamp Turn Signal Left Circuit Short to Ground Go To Pinpoint Test M .B1503 Lamp Turn Signal Right Circuit Failure Go To Pinpoint Test M .B1506 Lamp Turn Signal Right Circuit Short to Ground Go To Pinpoint Test M .B2048 Left Rear Turn Lamp Circuit Short to Ground For Mountaineer, Go To Pinpoint Test M .For Explorer or Explorer Sport Trac, REFER to Stoplamps in this section.B2049 Left Rear Turn Lamp Circuit Open For Mountaineer, Go To Pinpoint Test M .For Explorer or Explorer Sport Trac, REFER to Stoplamps in this section.B2050 Right Rear Turn Lamp Circuit Short to Ground For Mountaineer, Go To Pinpoint Test M .For Explorer or Explorer Sport Trac, REFER to Stoplamps in this section.B2051 Right Rear Turn Lamp Circuit Open For Mountaineer, Go To Pinpoint Test M .For Explorer or Explorer Sport Trac, REFER to Stoplamps in this section.B2071 Hazard Switch Signal Short to Ground If the hazard lamps are inoperative, Go To Pinpoint Test N .If the hazard lamps are always on, Go To Pinpoint Test O .B2281 Right Turn Switch Short to Ground Go To Pinpoint Test L .B2282 Left Turn Switch Short to Ground Go To Pinpoint Test L .All other DTCs — REFER to Section 419-10 .
6/12/2022 8:46:22 PM •
2011 Ford...
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Answered
on Jun 12, 2022